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PP10A-XXX-XXX-A (en)
PARTS LIST / PP10A-XXX-XXX-A AIR MOTOR SECTION
Indicates parts included in 637397 air section repair kit, plus items 70, 144, 175 and 180 (page 6).
MATERIAL CODE
[A] = Aluminum
[C] = Carbon Steel
[SS] = Stainless Steel
[B] = Nitrile
[Ck] = Ceramic
[U] = Polyurethane
[Br] = Brass
[D] = Acetal
[Bz] = Bronze
[Sp] = Santoprene
AIR MOTOR SECTION SERVICE
Service is divided into two parts - 1. Pilot Valve, 2. Major
Valve.
GENERAL REASSEMBLY NOTES:
y
Air motor section service is continued from fluid section
repair.
y
Inspect and replace old parts with new parts as neces-
sary. Look for deep scratches on metallic surfaces, and
nicks or cuts in “O” rings.
y
Take precautions to prevent cutting “O” rings upon instal-
lation.
y
Lubricate “O” rings with Lubriplate FML-2 grease.
y
Do not over-tighten fasteners, refer to torque specifica-
tion block on view.
y
Re-torque fasteners following re-start.
y
Service Tools - To aid in the installation of (168) “O” rings
onto the (167) pilot piston, use tool #204130-T, available
from ARO.
PILOT VALVE DISASSEMBLY
1. A light tap on (118) should expose the opposite (121)
sleeve, (167) pilot piston and other parts.
2. Remove (170) sleeve. Inspect inner bore of sleeve for
damage.
PILOT VALVE REASSEMBLY
1. Clean and lubricate parts not being replaced from service
kit.
2. Install new (171 and 172) “O” rings. Replace (170) sleeve.
3. Install new (168) “O” rings and (169) seal - Note the lip di-
rection. Lubricate and replace (167) pilot piston.
4. Reassemble remaining parts. Replace (173 and 174) “O”
rings.
MAJOR VALVE DISASSEMBLY
1. Remove (135) valve block and (233) adapter plate, expos-
ing (166 and 132) gaskets and (176) checks.
2. Remove (233) adapter plate, releasing (140) valve insert,
(141) valve plate, (200) gaskets.
3. Remove (136) plug and (137) “O” ring, releasing (111)
spool.
MAJOR VALVE REASSEMBLY
1. Install new (138 and 139) “U” cups on (111) spool -
LIPS
MUST FACE EACH OTHER
.
2. Insert (111) spool into (135) valve housing.
3. Install (137) “O” rings on (136) plug and assemble plug to
(135) valve housing, securing with (105) screws.
4. Install (140) valve insert, (141) gasket into (135) valve
housing.
NOTE:
Assemble (140) valve insert with “dished”
side toward (141) valve plate. Assemble (141) valve plate
with part number identification toward (140) valve insert.
5. Assemble (200) gaskets and (233) adapter plate to (135)
valve housing.
NOTE:
Tighten screws to 40 - 50 in. lbs (4.5
- 5.6 Nm).
6. Assemble (132 and 166) gaskets and (176) checks to (101)
center body.
7. Assemble (135) valve housing and components to (101)
center body, securing with (134) screws.
NOTE:
Tighten
screws to 40 - 50 in. lbs (4.5 - 5.6 Nm).
AIR MOTOR PARTS LIST
Item Description
(size)
(Qty) Part No.
[Mtl]
Item Description
(size)
(Qty) Part No.
[Mtl]
101 Center Body
(1) 97025
[A]
103 Bushing
(1) 97672
[Bz]
105 Screw
(M6 x 1 - 6g x 20 mm)
(4) 95991
[SS]
111 Spool
(1) 95835
[D]
118 Actuator Pin
(0.250” x 1.572” long)
(2) 95999
[SS]
121 Plug
(2) 95123
[D]
128 Plug
(1) Y17-50-S
[SS]
132 Gasket
(2) 96170
[B]
133 Lockwasher
(1/4”)
(4) Y117-416-C [C]
134 Screw
(M6 x 1 - 6g x 35 mm)
(4) 97745
[SS]
135 Valve Housing
(1) 95942-1
[A]
136 Plug
(1) 95941
[A]
137 Gasket
(1) 95844
[B]
138 “U” Cup
(3/16” x 1-5/8” OD)
(1) Y186-53
[B]
139 “U” Cup
(3/16” x 1-1/8” OD)
(1) Y186-49
[B]
140 Valve Insert
(1) 95838
[Ck]
141 Valve Plate
(1) 95885
[Ck]
166 Bottom Gasket
(2) 96171
[B]
167 Pilot Piston
(includes 168 and 169)
(1) 67164
[D]
168 “O” Ring
(3/32” x 5/8” OD)
(2) 94433
[U]
169 “U” Cup
(1/8" x 7/8" OD)
(1) Y240-9
[B]
170 Piston Sleeve
(1) 94081
[D]
171 “O” Ring
(3/32” x 1-1/8” OD)
(1) Y325-119
[B]
172 “O” Ring
(0.70” x 1-1/8” OD)
(1) Y325-22
[B]
173 “O” Ring
(0.103” x 1-3/16” OD)
(2) Y325-123
[B]
174 “O” Ring
(0.139” x 1/2” OD)
(2) Y325-202
[B]
176 Diaphragm
(check valve)
(2) 95845
[Sp]
200 Gasket
(1) 96172
[B]
201 Silencer
(1) 350-568
[C]
233 Adapter Plate
(1) 95832
[A]
285 Adapter Plate
(1) 97703
[A]
Lubriplate FML-2 Grease
(1) 94276
Lubriplate Grease, 10 Pack
637308
